ASTM C1355/C1355M-96(2001) - 10.10.1996
 
1. Scope

1.1 This specification covers glass fiber reinforced gypsum (GRG) composites having minimum properties and quality suitable to allow the production of GRG parts for non-loading bearing, thin section, ornamental shapes for architectural embelishment of interior building construction.

1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be independent of the other. Values from the two systems shall not be combined.

1.3 The text of this standard references footnotes which provide explanatory material. These footnotes shall not be considered as requirements of the standard.

 
2. Referenced Documents

E84-26a

Standard Test Method for Surface Burning Characteristics of Building Materials (Includes all amendments and changes 4/15/2026).

E136-26

Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750 °C

D578-05

Standard Specification for Glass Fiber Strands

D696-24

Standard Test Method for Coefficient of Linear Thermal Expansion of Plastics Between ?30?C and +30?C with a Vitreous Silica Dilatometer

C11-25

Standard Terminology Relating to Gypsum and Related Building Materials and Systems

C472-26

Standard Test Methods for Physical Testing of Gypsum, Gypsum Plasters, and Gypsum Concrete

C473-24

Standard Test Methods for Physical Testing of Gypsum Panel Products

C947-03(2023)

Standard Test Method for Flexural Properties of Thin-Section Glass-Fiber-Reinforced Concrete (Using Simple Beam With Third-Point Loading)

D256-26

Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics

D2583-25

Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor